Mackenzie, right, and Madison Miller from Avonmore, Pa., visit the Wall of Names at the Flight 93 National Memorial in Shanksville, Pa., Thursday, September 10, 2020, as the nation prepares to mark the 19th anniversary of the Sept. 11, 2001, attacks. The Wall of Names honors the 40 people killed in the crash of Flight 93. (Photo by Gene J. Puskar/AP Photo)
